Sash-lock.



No. 703,634. Patented July 1, 1902.

H. A. BAKER.

SASH LOCK.

(Application filed Oct. 25, 1901.\

(No Model.)

UNITED STATES PATENT ()EFTCE.

HOlVARD ALLEN BAKER, OF CLARKSVILLE, TEXAS.

SASH-LOCK.'

SPECIFICATION forming part of Letters Patent No. 703,634, dated July 1,1902.

4 Application filed October 25, 1901. Serial No. 79.969. (No model.)

To aZZ whom, it may concern.-

Be it known that I, HOWARD ALLEN BAKER, a citizen of the United States,residing at Olarksville, in the county of Red River and State of Texas,have inventedanew and use ful Sash-Lock, of which the following is aspecification.

The invention relates to improvements in sash-locks. 1

The object of the present invention is to improve the construction ofsash-locks and to provide an exceedingly simple and inexpensive one ofgreat strength and durability adapted to be readily applied to anordinary window and capable of supporting a sash at the desiredadjustment and of securely looking the sash in its closed position.

A further object of the invention is to provide a sash-fastener of thischaracter which when the sash is unlocked will permit the same to beraised freely and which willautomatically lock the sash in an elevatedposition when the same is released by the operator.

A further object of the invention is to enable the sash-fastener toautomatically lock the sash when the latter is closed.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully-described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is an elevation, partly in section, of aportion of a window provided with a sash lock constructed in accordancewith this invention, the sash being closed. Fig. 2 is a similar view,the sash being elevated. Fig. 3 is a vertical sectional view of thesash-lock. Fig. 4 is aperspective view of the sash-lock. Fig. 5 is adetail view of a portion of the ratchet-strip.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

1 designates a base or supporting plate designed to be secured to a sash2, as illustrated in Figs. 1 and 2 of the drawings, and provided withcountersunk perforations for the reception of screws or other suitablefastening devices 3 and having a hollow stud 5, of cylindrical form,arranged at its center for the reception of a sash supporting dog orpawl 6 and a sash-locking dog or pawl 7. The

cylindrical stud 5, which forms a pivot for the pawls or dogs 6 and 7,isinteriorly threaded for the reception ofascrew 8; but any othersuitable means may be employed for forming the 'pivot for the pawls ordogs and any other" form of screw may be provided for retaining thepawls or dogs on the pivot-stud. The head of screw 8 extends beyond thestud, as clearly shown in Fig. 3, and the pawls or-dogs are securelyretained on the stud and are permitted to swing upward and downward.

The sash-supporting pawl 'ordog 6, which is provided with an aperturefor the reception of the pivot, curves downward and outward from thepivot and is provided with an inwardly-extending weighted arm 9, whichis adapted to throw the engaging portion of the pawl or dog outwardagainst a ratchet-strip 10, which is secured to the window-frameadjacent to the sash. The ratchet-strip is provided at intervals withsmall apertures 11, adapted to receive the end of the sash-supportingdog or pawl, as clearly shown in Fig. 2, whereby the sash is held in anelevated position. As the sash is raised the pawl or dog 6 moves upwardover the ratchet-strip and the weighted arm is adapted to throw it intoany one of the openings or apertures 11. The movementof thesash-supporting pawl or dog is limited by a projection or stud 12,mounted on thelower portion of the plate and arranged between theengaging portion of the pawl or dog 6 and the weighted arm, as clearlyillustrated in Fig. 40f the accompanyingdrawings.

The sash-locking pawl or dog 7 extends upward and outward ataninclination, and it is provided adjacent to its engaging end with abulging or convex face 13, adapted to ride over the ratchet-stripwithout engaging the apertures or openings 11 when the sash is raised.The said pawl or dog 7 is provided at its inner or lower end with anopening for the reception of the pivot of the plate, and its inwardmovement is limited by a projection 14, located at the uppenportion ofthe base or supporting plate and adapt-ed to prevent the pawl ordog frombeing thrown backward or inward away from the ratchet-strip. Theratchet-strip is provided at its lower portion with a slot 15, adaptedto receive the upper end of the pawl or dog 7, which has a squaredengaging end or portion to interlock with the ratchet-strip at the topof the slot 15. The sash-supporting dog or pawl and the sashlocking dogor pawl are reduced at the pivot at their adjacent faces in order thattheir engaging ends may be arranged substantially in the same verticalplane for engaging the slots and openings of the ratchet-strip.

It will be seen that the sash-lock is exceedingly simple and inexpensivein construction, that it is strong and durable, and that it is adaptedto be readily applied to an ordinary window. Furthermore, it will beclear that the pawls or dogs are automatic in their operation and thattheir arrangement is such that springs are unnecessary to hold them intheir engaging position and to retain them in position for engaging theratchet-strip. However, should it be desired, springs may be substitutedfor the weights of the pawls without departing from the spirit of theinvention.

\Vhat I claim is 1. In a device of the class described, the combinationwith a ratchet-strip having apertures and provided with an enlargedopening, of means for engaging the apertures for supporting a sash in anelevated position, and the automatically-operatedlocking-pawl normallyresting against the ratchet-strip and arranged to ride over theapertures without engaging the same and adapted to be dropped into theenlarged opening, whereby the sash is locked against upward movement,substantially as described.

2. In a device of the class described, the combination of aratchet-strip provided with apertures and having a slot, asash-supporting dog or pawl arranged at an inclination and extendingdownward and having a weighted arm adapted to throw it into engagementwith the apertures, and the upwardlyeXtending inclined locking pawl ordog adapted to fit in the slot of the ratchet-strip and provided with aconvex face forming a bulging portion arranged to ride over theapertures, substantially as described.

3. In a device of the class described, the combination with aratchet-strip having apertures and provided with an enlarged slot oropening, of a sash-supporting pawl or device arranged to engage theapertures to hold the sash in an elevated position, and the sashlockingdog or pawl extending upward at an inclination and adapted to fit in thesaid slot and provided adjacent to its engaging end with an enlarged orprojecting portion arranged to ride over the apertures to prevent thesash-locking pawl or dog from catching therein when the sash is raised,substantially as described.

In testimony that I'claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

IIOXVARD ALLEN BAKER.

Vitnesses:

E. J. SWIFT, J. I). GALLEY.

